<?php
$current_day = date('N'); // Current day of the week as a number (1-7) - Sunday is first day of the week
$current_hour = date('H'); // Current hour in 24 hr format
if($current_day < 6) { // Check if it's Monday - Friday
if($current_hour > 1 && $current_hour < 9) { // time is between 1 and 9 AM-->
echo "123";
}
elseif($current_hour > 9 && $current_hour < 18) { // time is between 9 am and 6 pm-->
echo "456";
}
elseif($current_hour > 18 && $current_hour < 23) { // time is between 6 pm and 11 pm-->
echo "789";
}
else { // time is none of the above-->
echo "101112";
}
}
else { // EVERYTHING ELSE-->
echo "131415";
}